Deepolis

Deepolis is a free browser MMO game from Bigpoint, so it’s clear that it shares a lot of elements with DarkOrbit, from the same developer. The game takes you not to outer space (there’s Battlestar Galactica Online for those who wish to enter some exciting space combat) but to the depths of the sea, where a war is raging. Choose your side, maneuver your submarine and defeat terrible underwater creatures and other players.

Start by choosing your confederation from the three available: Nauts, Scion and Jafnhar. Besides exploring the vast ocean, composed of large underwater maps and over 30 main stations, the player has to be on lookout for enemies. Completing missions will provide you with money to upgrade your submarine, purchasing more powerful ammo, armor and other extras.